/*
Theme Name: Direct AI Canvas
Description: Direct AI Page Studio 的极简配套主题，为 AI 页面提供无干扰画布，同时保留基础文章与页面模板。
Version: 0.1.0
Requires at least: 6.0
Requires PHP: 7.4
Author: Direct AI Page Studio
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: direct-ai-canvas
*/

:root {
    --daic-background: #ffffff;
    --daic-surface: #f7f7f8;
    --daic-text: #18181b;
    --daic-muted: #71717a;
    --daic-border: #e4e4e7;
    --daic-accent: #111827;
    --daic-width: 72rem;
    --daic-reading-width: 46rem;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--daic-background);
    color: var(--daic-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 1rem;
    line-height: 1.7;
    text-rendering: optimizeLegibility;
}

.daic-site {
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    flex-direction: column;
}

.daic-shell {
    width: min(calc(100% - 2rem), var(--daic-width));
    margin-inline: auto;
}

.daic-site-header {
    border-bottom: 1px solid var(--daic-border);
    background: var(--daic-background);
    background: color-mix(in srgb, var(--daic-background) 94%, transparent);
}

.daic-header-inner {
    min-height: 4.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.daic-brand {
    min-width: 0;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--daic-text);
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.25;
    text-decoration: none;
}

.daic-brand:hover,
.daic-brand:focus-visible {
    color: var(--daic-muted);
}

.daic-brand .custom-logo {
    display: block;
    width: auto;
    max-height: 2.5rem;
}

.daic-nav ul {
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.25rem 1.25rem;
    list-style: none;
}

.daic-nav a {
    color: var(--daic-muted);
    font-size: 0.9375rem;
    text-decoration: none;
}

.daic-nav a:hover,
.daic-nav a:focus-visible,
.daic-nav .current-menu-item > a {
    color: var(--daic-text);
}

.daic-main {
    min-width: 0;
    flex: 1;
}

.daic-content-shell {
    width: min(calc(100% - 2rem), var(--daic-reading-width));
    margin-inline: auto;
    padding-block: clamp(2.5rem, 7vw, 5rem);
}

.daic-page-title,
.daic-entry-title,
.daic-archive-title {
    margin: 0 0 1.25rem;
    font-size: clamp(2rem, 6vw, 3.5rem);
    line-height: 1.1;
    letter-spacing: -0.035em;
}

.daic-entry-title a {
    color: inherit;
    text-decoration: none;
}

.daic-entry-title a:hover,
.daic-entry-title a:focus-visible {
    color: var(--daic-muted);
}

.daic-entry-meta {
    margin: -0.5rem 0 2rem;
    color: var(--daic-muted);
    font-size: 0.875rem;
}

.daic-featured-image {
    margin: 0 0 2rem;
}

.daic-featured-image img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 0.75rem;
}

.daic-prose {
    overflow-wrap: break-word;
}

.daic-prose > *:first-child {
    margin-top: 0;
}

.daic-prose > *:last-child {
    margin-bottom: 0;
}

.daic-prose h2,
.daic-prose h3,
.daic-prose h4 {
    margin: 2em 0 0.75em;
    line-height: 1.25;
    letter-spacing: -0.02em;
}

.daic-prose a,
.daic-card a,
.daic-pagination a {
    color: var(--daic-accent);
    text-underline-offset: 0.18em;
}

.daic-prose img,
.daic-prose video {
    max-width: 100%;
    height: auto;
}

.daic-prose pre {
    max-width: 100%;
    padding: 1rem;
    overflow: auto;
    border-radius: 0.5rem;
    background: #18181b;
    color: #fafafa;
}

.daic-prose blockquote {
    margin-inline: 0;
    padding-left: 1.25rem;
    border-left: 3px solid var(--daic-border);
    color: var(--daic-muted);
}

.daic-card-list {
    display: grid;
    gap: 1rem;
}

.daic-card {
    padding: clamp(1.25rem, 4vw, 2rem);
    border: 1px solid var(--daic-border);
    border-radius: 0.875rem;
    background: var(--daic-background);
}

.daic-card .daic-entry-title {
    margin-bottom: 0.75rem;
    font-size: clamp(1.35rem, 4vw, 1.75rem);
    letter-spacing: -0.02em;
}

.daic-card .daic-entry-meta {
    margin: 0 0 0.75rem;
}

.daic-card p:last-child {
    margin-bottom: 0;
}

.daic-pagination {
    margin-top: 2rem;
}

.daic-pagination .nav-links {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.daic-pagination .page-numbers {
    min-width: 2.5rem;
    min-height: 2.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--daic-border);
    border-radius: 999px;
    text-decoration: none;
}

.daic-pagination .current {
    border-color: var(--daic-accent);
    background: var(--daic-accent);
    color: #ffffff;
}

.daic-site-footer {
    padding-block: 1.5rem;
    border-top: 1px solid var(--daic-border);
    color: var(--daic-muted);
    font-size: 0.875rem;
}

.daic-site-footer p {
    margin: 0;
}

.daic-skip-link {
    position: fixed;
    z-index: 100000;
    top: 0.75rem;
    left: 0.75rem;
    padding: 0.65rem 0.9rem;
    transform: translateY(-150%);
    border-radius: 0.375rem;
    background: var(--daic-accent);
    color: #ffffff;
}

.daic-skip-link:focus {
    transform: translateY(0);
}

.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
    word-wrap: normal !important;
}

.screen-reader-text:focus {
    z-index: 100000;
    top: 0.5rem;
    left: 0.5rem;
    width: auto;
    height: auto;
    padding: 0.75rem 1rem;
    clip: auto !important;
    background: #ffffff;
    color: #111827;
}

@media (max-width: 48rem) {
    .daic-header-inner {
        padding-block: 0.875rem;
        align-items: flex-start;
        flex-direction: column;
        gap: 0.75rem;
    }

    .daic-nav ul {
        gap: 0.25rem 1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}